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Module 2: Cost capture

Which cost categories qualify, how to capture them from the ledger with project codes and a routine that runs through the year, and how to keep the effort proportionate.

In-House Finance Team ProgramLast reviewed 2 October 2026

A claim is only as good as the costs behind it. After this module you will be able to map your ledger to the cost categories the seven schemes recognise, set up project codes so that eligible costs are pulled from the system rather than reconstructed after the year, and run a capture routine whose effort matches the size of the claim.

What this module covers

  • The cost categories that recur across the seven schemes, and where each scheme draws its own line.
  • Mapping the chart of accounts to those categories.
  • Project codes as the join between the technical record and the ledger.
  • A capture routine that runs during the year, with a year end reconciliation.
  • Keeping the effort proportionate to the value and risk of each category.

The cost categories

Every scheme starts from the same idea: the cost of the people who did the work to resolve the uncertainty, the people engaged to do part of it, and the materials and services consumed in doing it. The differences are at the edges, which is where reviews concentrate.

CategoryWhat usually falls in itWhere the schemes differLedger source
StaffPay of people directly engaged in the work, often with employer pension or social contributions, apportioned to their time on itWhether supervision and support count; bonuses, benefits and directors' pay; caps on owner managersPayroll ledger
Contractors and subcontracted workPayments to another business for part of the work; agency workers under your directionA fixed percentage of the payment; where the work is done; caps relative to your own spend; who may claimPurchase ledger, contracts
Materials and consumablesMaterials and items used up or transformed in the workWhether utilities are consumed or excluded overhead; items that end up in products soldPurchase ledger, stock issues
Software, data and cloudLicences, cloud computing and computer rental used in the workA named category, an apportioned one, or overhead with a lower benefitIT cost centre
OverheadsRent, power and administrative support attributable to the workExcluded, apportioned, replaced by a fixed proxy, or base deduction onlyCost centres
Capital itemsPlant, equipment and buildings used in the workMostly outside the main claim; depreciation eligible in some schemes; separate allowances in othersFixed asset register

Capture every category at full value and apply the scheme's percentage, cap or exclusion as a separate step.

Mapping the chart of accounts

The mapping is a one page document listing every expense account and how it relates to the claim, prepared once, reviewed each year and kept with the claim file. For each account record:

  1. Scope. Always in scope (direct engineering payroll), in scope when apportioned (power, cloud, shared technical staff), or never in scope (marketing, entertaining, interest).
  2. Capture basis. Direct coding, where every transaction carries a project code, or apportionment, where a share of the account is allocated by a stated method. Prefer direct coding wherever a cost can be coded at source.
  3. Evidence. What supports amounts drawn from the account: timesheets, contracts and invoices, stock issue records, licence agreements, the apportionment working.

Errors the mapping prevents: capturing by vendor name rather than by account and project; assuming capitalised development costs are outside the claim; omitting employer contributions the scheme includes; and counting agency workers twice.

Project codes

The technical narrative describes projects and the uncertainty each set out to resolve. The ledger records transactions. Project codes join the two. Set codes at the level the scheme tests, the project or the activity, not the department. Open a code when the uncertainty is identified and close it when it is resolved or the work stops, so the time boundary of the eligible work is built into the ledger rather than argued later. Give routine work on the same product its own code, so that it is visibly excluded.

Codes must appear wherever cost arises: timesheets, purchase orders, expense claims, stock issues and intercompany charges. Where the system cannot carry a project dimension, keep a mapping table from cost centres to projects. One catch-all R&D code is the most common weakness in an in-house claim: it mixes eligible and routine work, hides timing, and forces a reconstruction at year end.

The capture routine

Capture during the year is cheaper and stronger than capture after it: the people who can explain a transaction are still available and the records are made at the time. At each month end or quarter end:

  • Extract costs by project code and category, and file the extract.
  • Add new vendors and accounts opened in the period to the mapping.
  • Confirm that time records for the period are complete and approved (module 3).
  • Note any grant, subsidy or customer contribution against each project (module 5).
  • For contractor invoices, check that a contract and the place of work are on file (module 4).

At year end: reconcile the total captured to the trial balance; run the shared cost apportionments once, using the stated method; prepare the cost schedule by project and category; and read it against the technical narrative so that every project with costs has a description and every described project has costs. Good looks like a schedule that reconciles to the accounts in one step, where every line names its source and evidence.

Keeping the effort proportionate

Effort should follow value and risk. Staff costs are usually the largest category and carry most of the review risk, so they justify timesheets or a structured allocation (module 3). Contractor costs justify a contract review per vendor. Consumables are best coded at source. Shared costs justify one documented apportionment a year, where the scheme allows them. Small amounts can be left out if the decision is written down: a documented exclusion is a strength under review, an unexplained gap is not.

Illustrative example

Illustrative example. Harbour Robotics Ltd, a hypothetical company, has two projects its engineers have identified as resolving technical uncertainty. Its ledger shows engineering payroll of 600,000, contractor invoices of 100,000, materials of 80,000, cloud services of 30,000 and rent and administration of 200,000. Capture by project code gives: staff 300,000 (half of engineering time, from time records); contractors 100,000 at full value, with the scheme's percentage and location rules applied as a separate step; materials 50,000, after excluding 30,000 of components built into units that were sold; cloud 12,000, apportioned by compute hours logged to the project codes; and overheads 40,000 on a floor area and headcount apportionment, held on a separate line because some schemes exclude it. The base before scheme specific rules is between 462,000 and 502,000, and the benefit is calculated at that country's rate.

Across the seven countries

Each row gives the cost categories in the scheme's own wording; the linked page holds the definitions and exclusions in full.

CountryCost categoriesDetail
United StatesQualified research expenses are wages, supplies and 65% of contract research costs, linked to the qualifying work. Utility costs are generally overhead and excluded.Qualified research expenses
United KingdomStaffing costs (earnings, employer Class 1 National Insurance and employer pension contributions of staff directly and actively engaged), consumable items (materials, water, fuel and power consumed or transformed), data licences and cloud computing apportioned to the R&D, and 65 percent of payments to unconnected subcontractors and staff providers.Eligible expenditure
IrelandExpenditure incurred wholly and exclusively in carrying on research and development activities. General overheads such as rent, rates, insurance and administration are excluded, while costs directly consumed such as power and laboratory supplies may be apportioned.Eligible expenditure
CanadaSalary or wages of employees directly engaged in SR&ED for the portion of time so engaged; 80 percent of arm's length contract payments; overheads either directly related and incremental (traditional method) or a prescribed proxy amount of 55 percent of the salary base.Proxy vs traditional method
AustraliaExpenditure incurred on registered R&D activities to the extent incurred on those activities, the decline in value of depreciating assets to the extent used for R&D, and overheads such as rent, electricity and administrative costs using a reasonable method of apportionment.Eligible expenditure
New ZealandSalary or wages and other employee remuneration including employer superannuation contributions to the extent the employee performs R&D, contractor expenditure, depreciation loss to the extent of R&D use, and overheads including rent, power and administrative support apportioned on a reasonable basis.Eligible expenditure
SingaporeStaff costs (salaries, bonuses, allowances and employer CPF contributions, excluding directors' fees) and consumables (materials and items used up or transformed, excluding utilities) for R&D carried out in Singapore attract the enhanced deductions. Other R&D expenditure, including overheads, utilities and software, qualifies for the base 100 percent deduction only.Enhanced deductions

Where to go next

Self-check questions

Answer each question, then open it to compare.

Name the cost categories that recur across the seven schemes, and the two categories where the schemes differ most.
Staff, contractors or subcontracted work, materials and consumables, software and cloud, and overheads. The sharpest differences are in overheads (excluded, apportioned, replaced by a proxy, or given a lower benefit) and in contractor costs (fixed percentages, caps and rules about where the work is done).
Why is a single catch-all R&D project code a weak basis for a claim?
Schemes test eligibility project by project or activity by activity. One code mixes eligible and routine work and cannot show when the uncertainty was identified or resolved. A code per project, plus a code for routine work, lets the ledger extract match the technical narrative.
What does the chart of accounts mapping record for each account?
Whether the account is always in scope, in scope when apportioned, or never in scope; the capture basis, meaning direct coding or apportionment; and the evidence that supports amounts drawn from it.
What is the one reconciliation the cost schedule must pass at year end?
The total captured must reconcile to the trial balance or statutory accounts in one step, with each line of the schedule naming its ledger source and its evidence.
How do you keep capture effort proportionate?
Direct capture for the large categories (staff and contractors), coded purchases for consumables, one documented apportionment a year for shared costs where the scheme allows them, and a written decision not to chase small amounts rather than silence.

Official sources

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Educational content only, not tax advice. See the disclaimer.